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Method and apparatus for processing and re-using of gray water for flushing toilets

Inactive Publication Date: 2006-10-10
AIRBUS OPERATIONS GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Benefits of technology

[0006]to reduce the amount of fresh water that an aircraft conventionally had to carry to avoid the use of disinfectants in the treatment of the gray water.SUMMARY OF THE INVENTION

Problems solved by technology

Thus, in the passenger lavatories substantial quantities or volumes of gray water are produced, which conventionally are not used for any further purpose.

Method used

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  • Method and apparatus for processing and re-using of gray water for flushing toilets
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  • Method and apparatus for processing and re-using of gray water for flushing toilets

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Embodiment Construction

[0018]The block diagram of FIG. 1 shows the important components that are installed, for example in a toilet or lavatory of a commercial passenger aircraft indicated schematically at A. The components include an apparatus for treating and reusing gray water for the flushing of a toilet. A faucet 1 is installed for supplying fresh water into a lavatory basin 2. The faucet receives fresh water from a source 18 through a fresh water conduit 18A. The faucet 1 is controllable either manually or automatically by a faucet control 1A. A heater 1B provides hot water to the faucet. The faucet discharges fresh water through an outlet 1C into the lavatory basin 2. An easily exchangeable coarse filter 3 is installed in the outlet of the basin 2 to feed coarsely filtered gray water through a further fine filter 4 that is also easily cleaned or exchanged. The fine filter is preferably installed in a gray water treatment chamber 5 so that the fine filter 4 is externally accessible for maintenance. ...

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Abstract

In order to use so-called gray water for the flushing of toilets, for example in a conveyance such as a passenger aircraft, the gray water is passed through at least one filter, preferably through a coarse filter followed by a fine filter, into a treatment tank where it is anodically oxidized. The rinsing is performed by a pump that may be a rotary pressure pump or a piston cylinder pump. The pump passes the processed or oxidized water through an excess pressure valve and through at least one spray nozzle into a toilet bowl.

Description

PRIORITY CLAIM[0001]This application is based on and claims the priority under 35 U.S.C. §119 of German Patent Application 102 29 799.1, filed on Jul. 3, 2002, the entire disclosure of which is incorporated herein by reference.FIELD OF THE INVENTION[0002]The invention relates to a method and apparatus for processing and re-using of gray water for the flushing of toilets, particularly in vacuum toilet systems used in aircraft to optimize the use of available water.BACKGROUND INFORMATION[0003]Commercial aircraft currently carry fresh water for the flushing of vacuum operated toilets in these aircraft. Moreover, the lavatory basins also use freshwater which, by its use in the handwash basin becomes so called “gray water”. Thus, in the passenger lavatories substantial quantities or volumes of gray water are produced, which conventionally are not used for any further purpose. The inventors have discovered that following a simple treatment or processing of this gray water it would be quit...

Claims

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Application Information

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Patent Type & Authority Patents(United States)
IPC IPC(8): C02F1/467B01D35/027B01D36/02B64D11/02C02F9/00E03D5/016
CPCB64D11/02C02F9/005E03B1/042E03D5/003C02F1/001C02F1/4672C02F2103/002C02F2209/42E03B2001/045Y02T50/46Y02A20/30Y02T50/40C02F9/20
Inventor HOFFJANN, CLAUSHEINRICH, HANS-JUERGEN
Owner AIRBUS OPERATIONS GMBH
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